Manufacture of pile carpets.



H. HARDEGGER. MANUFACTURE OF PILE OABPBTS.

APPLICATION FILED mu 4, 1909.

1,069,330, Patented Aug. 5, 1913.

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Q o I o I 0 u a a 0 II o o c n 0 o 00 UNITED STATES PATENT orrron. nms'nmneesa, 'or arson, swzrznamnn v 'EAN'UTACT-UBE FILE GHPETS.

specific tion: Ltters Patent.

Patented Aug. 5,1'913.

Application filed May 4, 1909. Serial No. 483,957.

To all whom it may'cemcem: I

*Be, it known that I, 'Hnrrs 'HARDEG'GER, af citizen of the Republic of Switzerland, re-i siding-at A'rb'on, Benglistrasse, Switzerlandf have invented certain new and useful I-m-@ provements in the Manufacture of Pilei Carpets; and I do hereby declare the follow-mg to be a. full, clealr, and'exact descrip time of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference; being had to the accompanying drawings, "and to letters 'or figures of reference marked thereon, which form a part of this specified; 'tion. 1 My invention relates to an improvement in the manufacture ofipile, carpets which are imitated knotted carpets, that is, imitations f the oriental carpets, and of two types, the Smyrna and the Turkish.

According to my invention separate rows of loops of pile threads parallel to the rows of needles are formed after one --another on the ground of the carpet in the frame of an embroidering machine-and sewed thereon by the needles of the embroidcring machine.

One form of construction of the embroidering machine for practising the invention is illustrated in the accompanying drawing, in which- Figure 1 is'a vertical section through the embroidering machine; Fig. 2 is a section on the line A--B of Fig. 1; Figs. 3 to 6 are details of the einbroidering machine drawn to an enlarged scale. Figs. 7 to '10 show the operation 111 difierent successive stages.

Fig. 11 is -a-detai-l. I

1 is the ground of the carpet formed by a fabric web and stretched on the frame -of a shuttle-embroidering machine, and -2 are the bobbins on which the pile threads are wound. The needle-bar with the needles 5 in which the threads 5 are threaded is movable penpendicula-rly toward the carpet ground. For forming the binding stitches, shuttles on the back of the carpet-ground (which are not shown on the drawing) 00- operate with the needles 5 in the well known manner. The pile threads 3 are guided through a stationary guide 6 and around a tension roller7 covered with emery, andthrough a second guide 8, this latter being movable up and down independently of the ground of the carpet, and supported from levers 9 by links 10. A horizontal flat bar 12 is connected edgewise *to the guide 8 by means of rigid rods 11. The flat bar 12,

therefore, makes the same movement with reference to the ground 1 as the guide 8, and extends across the whole width ofgthe ground 1, its thickness diminishing toward ts upper rounded longitudinal edge. This *bar 12 is provided with parallel vertical grooves 13, which extend over the rounded upper edge from the front-to the back of the bar, and on the side turned away from the carpet ground 1 the bar 12 is provided W-Itl1 -a :gI'OOVG 14 extending longitudinally of said bar (Figs. 3 and 4) at or just below the rounded upper edge.

, 'Over the needle-bar '4 and parallel to it there is arranged an -L-shaped iron bar 15, movable at right angles to the carpet ground. This bar has on one of its ends a fork, which passes o'vera rod s'ecured to the frame of the machine carrying the carpet ground and occupying a vertical -position in the machine, so that said bar 15 is drawn with the frame on the horizontal movement of the latter, but is not influenced by the vertical movement of the frame, (Fig. 11-). On the side turned toward the ground 1 the bar 15 is provided with a roughened face 15' (Fig. -5) which is destined to operate in conjunction with the bar 12, to engage and hold they-pile threads as the bar 12 moves down. On the bar 15 separated fiat knives v16 are placed in juxtaposition. These knives are furnished with inclined slots 17 through which pass the shafts of screwbolts 18 fixed on the bar, Around the shafts of the-screw-bolts are placed-spiral springs 19, working both sion springs, the upper ends of said springs engaging the heads of the bolts 18, and their other ends pressing rearward and downward the knives 16 on the bar 15.

The knives 16 are furnished with flanges 16 at their rear edges, by means of which and under the action of the springs 19, which engage the pins 20, they are pressed toward the =L-shaped iron bar placed behind the knives and movable perpendicularly toward the ca-rpetround, (Figs. 5 and 6). The pile threads g are held side by side on the carpet ground proportionally to the spacing of the grooves 13 in the 'bar 12, while the needles 5 are distanced from each other proportionally to the distances of repeating of the embroideri-n machine.

With the embroi ering machine shown in the drawing and described in the foregoing,

as compression and tor-v horiaontal rows of loops or piles extending over the whole width of the carpet ground can be sewed on the carpet ground one after another and cut oiit by the knives 16 from the pile threads. Starting from the position of the elements operating together as shown in Fig. 7, the succession of dlfiierent operationsis now as follows: When, after having sewed on the carpetground a row of piles or loops, the needle bar t has been moved backward, the frame with the carpet ground will be moved vertically upward from the panto graph a. distance (1 equal to the distance r between the two rows of piles. The bar 12 with the pile threads 8 in the grooves 18 now moves upward till the groove let comes into the plane of the knives 16 ig. 8). The pile threads forming loops or piles are thus placed around the rounded upper edge .nives 16 are now dis- 12 by the bar 21 in run to e .1. of the spr ngs 19, and by reason of the arrangement of the oblique slots 17 they execute a movement in a direction inclined to the bar 12, enter the groove 14 and cut the parts of loops held front of them from the pile threads. lhe loops cut oft and sewed on the carpet ground substantially at their middle form now the first row of loops it. During this latter op eration the ends of the loops forming the second row below the place where the first row of loops has been out are held between bar 12 and bar 15., The bar 12 now moves back to its lower position, while at the same time the bar 15 is moved still farther to ward the carpet ground holding the loo s between itself and the said ground 1". The needle-bar now moves toward the carpet ground and sews the loops onto it (Fig-10). When the bar 12 moves back into its lower position the roughened face 15 prevents the ends of the threads from being drawn downward by the bar 12. The described operation is now repeated, for after raising the frame with the carpet ground the'distame a and after forming a new row of loops by the bar 12 rising again, the loops are out ed by the knives 16, so that a new row of loops is formed, 2'. 0., has been fastened to the ground 1, and so on, until the whole length. of the ground is covered with rows of loops a.

With the embroidering machine hereinbefore described it is possible by means of successive horizontal and vertical displacements of the frame with the carpet ground thereon and operated from the pantograph of the embroidering machine, to sew several superposed rows of loops on the carpet ground, or to sew the loops or each row on the ground with several stitches.

1 claim 1. In an embroidering machine for the 4 1 1 v e A l manutacture ol' imitation knotted carpets. the combination with groundtabric holding means, of a row of sewing mechanisms, means to feed a row of pile threads between the sewing mechanisms and ground fabric to be sewed to the latter by the former. means to form loops in the threads and means to cut the pile from the pile thread supply after the sewing operation.

2. In a machine for the manufacture of imitation knotted carpet-s the combination with ground-fabric holding means, of a transverse row of sewing mechanisms in operative relation thereto, means to hold the ends of a row of pile threads in position to be sewed by the sewing mechanisms, a bar mo able between the pile thread holding means and the ground fabric to form loops in the pile threads and over which the pile threads are guided and means to cut the pile loops from the pile thread supply after the sewing. operation and the forming or the pile loops.

I 3. In a machine for the manufacture of imitation knotted carpets, the combination with ground-fabric holding means, of a transverse row of sewing mechanisms, means to supply pile threads to the sewing mechanisms to be sewed to the ground-fabric in transverse rows, a horizontal vertically mov able bar to form loops in the. pile threads, and a row of cutting mechanisms cotjp crating with a longitudinal groove in the bar to cut the pile loops from the pile thread supply after they have been sewed I. a

to the groundqt'abric.

t. In a machine for the manufacture of imitation knotted carpets, the combination with ground-fabric holding means, of a vertically movable bar having a longitudinal groove therein, a row of sewing mechanisms, means to supply pile threads to the sewing mechanisms, a row of cutting mechanisms cooperating with the and groove to cut the pile loops formed by the bar :trom the pile thread supply after the sewing operation, and means to hold the ends of the pile threads after the loops have been cut therefrom, for sewing the next rcw of loops to the ground fabric.

5. In a machine for making imitation.

knotted carpets, the combination with ground-tabrio-holding' means; of sewing mechanism, means to supply pile thread between the sewing mechanism and groundfabric and having a longitudinal groove therein and over which the pile threads lie preparatory to being cut, asecond bar to hold the pile threads against the first bar, a.

ground-tabric-holding means; of means se'w pile threads to the ground, a vertically movable bar having a longitudinal slot over which the pile threads are held, a cutter bar, knives having inclined slots thereon, bolts in the bar and passing the slots of the knives, springs on the bolts to normally hold the knives retracted and means to engage the knives and move them into the groove in the first mentioned bar, said knives having a diagonal movement by reason of their inclined slots.

7. In a machine for making imitation knotted carpets, a knife bar having a roughened pile-thread engaging face, knives having inclined slots, bolts in the bar and passing through the slots, coil retracting springs on the bolts, and pins on the knives against which one end of each of said springs acts, the other end of said springs being secured in the bar.

In testimony-that I claim the foregoing as my invention, I have signed my name in presence of two subscribing witnesses.

HANS HARDEGGER.

Witnesses ERNST FISCHER, CARL GUBLER. 

